Attic Insulation Questions From Newmarket Homeowners
Ontario attic rebates up to $1,250 may applyOwners around Newmarket, Aurora and East Gwillimbury raise these points most often before they book attic work.
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Phone us with it. When the answer hinges on your particular attic, a free check settles it.
Frequently Asked Questions
New Ontario houses are built with about R-60 in the attic, and that is our target for existing homes as well. Plenty of older attics in Newmarket and Aurora read somewhere from R-20 to R-40.
Shine a flashlight through the hatch. When the joist tops show above the fill, the attic insulation is under about ten inches deep. Chilly upstairs rooms, icicles on the gutters and frost on the roof boards are further signs. A free attic check gives the exact depth.
Keep the layer and add to it if it is dry, clean and has no droppings in it. Replace it when it is damp, mouldy, fouled by animals or flattened across most of the floor. The large majority of attics only need a top-up.
It is two rounds of measurements at the same marked points across your attic floor: one before any attic insulation work starts and one after it ends. Both rounds go on your paperwork alongside the R-value they work out to.
Around here, a typical attic insulation bill lands between $1,500 and $3,500. Topping up tends to cost $1.25 to $2.50 per square foot of the floor up there, while a clear-out with a refill tends to cost $3.00 to $5.50. The quote we email after the free check is the number that binds.
Home Renovation Savings pays toward taking an attic to R-50. One stream needs no assessment but only pays installers already on its list; the other starts with an energy assessment and lets you pick any contractor. Funding is currently scheduled to end November 30, 2026, with every tier and rule laid out on our attic insulation rebate page.
Aim for a hatch that comes as close as you can to the attic around it. A stack of rigid foam on the lid plus a gasket around the frame turns the weakest spot in the ceiling into part of the insulated surface.
It may be vermiculite, and some vermiculite contains asbestos. Leave it alone and have a sample lab-tested. A positive result means an abatement contractor clears it first, and the new attic insulation follows.
No. Sealing the attic floor keeps damp indoor air in the house instead of letting it reach the attic, where it would cause frost and mould. Bath and kitchen fans keep clearing moisture from the rooms as before.
Blown cellulose and fiberglass can last for decades as long as the attic stays dry and nobody tramples it. Settling and foot traffic slowly eat away at the depth, which is why an occasional depth reading is worth having.
Read About Each Attic Job
Every page explains the method and the usual price range in plain terms.
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Attic Insulation Top-Up
An attic insulation top-up keeps your existing fill and blows a fresh layer over it until the attic reads R-60. Our two depth readings record exactly how many inches went on.
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Cellulose Insulation
Cellulose insulation starts life as newsprint and cardboard, shredded and treated so it resists fire and pests, and we blow it across the attic floor as loose fill. Because it tucks in around wiring, nails and truss webs, cellulose insulation is the material we pick most often for older attics.
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Blown-In Fiberglass Attic Insulation
Blown-in fiberglass insulation arrives as fluffy spun glass that the hose lays down in a soft, even blanket. It will not soak up water, puts very little weight on the ceiling and holds its depth for years.
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Attic Insulation Removal And Replacement
Attic insulation removal clears out fill that is damp, mouldy, fouled by mice or squirrels, or crushed past saving. With the joists bare and the ceiling sealed, new attic insulation is blown back in to full depth.
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Attic Air Sealing
Attic air sealing shuts the small openings where heated house air pours up into the attic, with spray foam, caulk and fitted covers. We do it before any new attic insulation goes down, since insulation slows heat yet lets moving air straight through.
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Attic Hatch Insulation
Attic hatch insulation turns a thin, drafty access lid into part of the insulated ceiling. We gasket the frame and glue a thick stack of foam board onto the lid, so the hatch holds heat like the attic around it.
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Ice Dam Prevention
Ice dam prevention aims to hold the roof deck at outdoor temperature, so high snow stays frozen instead of melting and refreezing at the eaves. In practice that means sealing the ceiling, keeping soffit air moving and bringing the attic insulation to full depth.
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Attic Insulation Rebate
A Newmarket owner whose thin attic is brought up to R-50 may qualify for an attic insulation rebate under Home Renovation Savings, the province-wide program run jointly by Save on Energy and Enbridge Gas. The thinner the attic was, the larger the attic insulation rebate.
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Attic Insulation Cost
Four things drive attic insulation cost in Newmarket: how big the attic is, which material you pick, how many inches are already up there, and whether a clear-out comes first. Most homes pay between $1,500 and $3,500.
Request Your Free Attic Check
Two or three lines on the house and the cold spots upstairs let us bring the right gear.
You can also call us at +1 (289) 210-8352